Bohr was technically Jewish on his mother's side. However, he may have been baptized and he belonged to the Lutheran Church (perhaps another technicality) from which he resigned before he married. The values he lived by would not have allowed him to accept Zionism. He was not only a great scientist, he was also a man of great humanity. Bohr was raised in a very rich scientific cultural environment that of his Danish grandfather and father. His scientific work won him the Nobel Prize in 1922. Over the years he and Einstein did battle over the question of whether quantum theory was a complete description of nuclear phenomena. Einstein rejected being left with only a statistical description of quantum theory. He died believing that quantum theory was not a complete system. Over time Bohr's Copenhagen School of physics triumphed over Einstein's objections. In a sense Bohr's defense of Heisenberg's uncertainty principle and Bohr's complementarity gave support to Henri Bergson, who debated Einstein some years earlier over the question of the nature of reality in its most fundamental dynamics. Bergson's popularity suffered following his debate with Einstein, but today his life work matches that of both Einstein's and Bohr's in terms of its philosophical significance. It should be noted that scientists cannot escape philosophical questions, although they are not required to answer them.
Hungary's Orban: Refugees threaten Europe's Christian roots (Reuters)
from the article: This day in Jewish history / Nobel-winning physicist Niels Bohr is born